Rain shower UGH. Handheld paddle with multiple settings. Look at Hans Grohe "Raindance" multi-function handheld; comes in rounded or rectangle shape.

Rainshower head is a waste of money. Just get a handheld with multiple settings that slides on a pole to adjust height

I also dislike rainshower heads.

Not all handhelds are the same. Some of the holders sit too close to the wall and don't allow the handheld to be placed in a good position for showering.

I like the bars made by Jaclo that have a ball-joint that extends further out from the wall and allow the handheld to be rotated to a good position for showering.

Is there not a matching handheld shower head for the brand of rainshower you selected? I have both in my shower and I went with Kohler Purist for both. The handheld round shower head is plenty big.